chore: reorganize adaptor related package

relay/adaptor/azure/helper.go

@@ -0,0 +1,15 @@
+package azure
+
+import (
+	"github.com/gin-gonic/gin"
+	"github.com/songquanpeng/one-api/common"
+)
+
+func GetAPIVersion(c *gin.Context) string {
+	query := c.Request.URL.Query()
+	apiVersion := query.Get("api-version")
+	if apiVersion == "" {
+		apiVersion = c.GetString(common.ConfigKeyAPIVersion)
+	}
+	return apiVersion
+}